[RTTY] Need to lawyer up for 60 meters

[Kai]

That information is badly outdated. The FCC and NTIA have since interpreted it 
far more leniently.

For Amateur-RTTY, see the Technical Correspondence, QST, Sept 2013 for an 
example of how
to use Amateur RTTY on the 60 m channels.

Pretty much ANY amateur digital mode used in ham radio is permitted, as long as:
(1) the transmission is centered in the channel
(2) fits entirely in the 2800 Hz channel BW
(3) you also monitor the channel in upper SSB for possible gov't call.

The term "RTTY" means direct teleprinter communications by radio. Basically, my 
keyboard to
your screen. Only in a very narrow facet of ham radio does it specifically refer 
to 170 Hz shift
45.45 baud Baudot code radio communications (some of use call that Amateur-RTTY, 
or affectionately "Steam-RTTY").
"RTTY" includes PSK modes, JT-65, JT-9, Amateur RTTY, and a long list of 
others,... always has.

73
Kai, KE4PT

On 11/25/2013 12:43 PM, Jim N7US wrote:
> Check out ARRL's recommendations/interpretations at
> http://www.arrl.org/60m-channel-allocation .
>
> The "Digital Operation" section includes:
>
> "It is certainly possible to interpret the FCC Report and Order somewhat
> broadly as it concerns digital operating on the band, but be careful not to
> read too much into the text. For example, while the Report and Order
> mentions RTTY, it also specifies that the signal must be less than 60 Hz
> wide. This is too narrow for amateur teletype signals. Only a much narrower
> mode such as PSK31 (about 50 Hz wide) meets this requirement."
>
>
>
> 73, Jim N7US
>
>
>
> -----Original Message-----
>
>
> ORIGINAL MESSAGE:          (may be snipped)
>
> On Mon, 25 Nov 2013 11:20:40 -0500, Kai wrote:
>
>> Remember that the 60 m band channels are UPPER SSB, so in AFSK, use
>> upper SSB. If you use MMTTY than you also select "rev".
> REPLY:
>
> Yes, but the rules do not require AFSK as far as I can see. Direct FSK is
> permissible.
>
> However, there is a big IF.  After googling everything I can regarding RTTY
> on 60 meters, it appears there is a consensus that 170 Hz shift RTTY is not
> allowed. The maximum shift permitted is 60 Hz. The FCC rules specifically
> allow PSK31 but they refer to emission type 60H0J2B as "RTTY". See the rules
> section at the end of this post.
>
> Also see
>
> http://wireless.fcc.gov/services/index.htm?job=licensing_2&id=industrial_bus
> iness
>
> and
>
> http://wiki.radioreference.com/index.php/Emission_Designator
>
> For info on emission designators.
>
> It's a confusing mess.
>
> 73, Bill W6WRT
>
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
>>> FCC part 97.303(h):
>>>
>>> (h) 60 m band: (1) In the 5330.5-5406.4 kHz band (60 m band), amateur
>>> stations may transmit only on the five center frequencies specified
>>> in the table below. In order to meet this requirement, control
>>> operators of stations transmitting phone, data, and RTTY emissions
>>> (emission designators 2K80J3E, 2K80J2D, and 60H0J2B, respectively)
>>> may set the carrier frequency
>>> 1.5 kHz below the center frequency as specified in the table below.
>>> For CW emissions (emission designator 150HA1A), the carrier frequency
>>> is set to the center frequency. Amateur operators shall ensure that
>>> their emissions do not occupy more than 2.8 kHz centered on each of these
> center frequencies.
>
>
>
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